There's a place for both. Running Bilstein Sports on my Impala SS and love them. My prior FWB with total Impala SS suspension also had them and loved it as well. On my current FWB I wanted to keep stock FE1 coils so opted for "ever slightly less" approach with Monroe SS = glad I did. There's even a version of KYB that's reportedly respectable. A rough guide here:
\'96SS SOB: SSRI, Herter Tune, Tri-Y II, , 3000 Edge, F/HO bars, METCO extendeds with CV MMC, Bilsteins, currently Vredestein Ultrac Sessanta (315/35 rear). Finally, wait for it... LT-4 knock module!
\'96FWB BUW-Butt Ugly White: PCMPerformance tune, HDFA w/ swissed filter, 1/2 SLP s.s. catback with H- and Flow Super 50s, oem opti rebuilt 3 times, SS Bars, METCO LCA, Airlift 1000, Monroe SS, PowerTrax No-Slip, CTS wheels with +1 rubber. Finally, yes again... LT-4 knock module!